Pseudodifferential Operators on L, Wiener Amalgam and Modulation Spaces

نویسنده

  • ELENA CORDERO
چکیده

We give a complete characterization of the continuity of pseudodifferential operators with symbols in modulation spaces M, acting on a given Lebesgue space L. Namely, we find the full range of triples (p, q, r), for which such a boundedness occurs. More generally, we completely characterize the same problem for operators acting on Wiener amalgam space W (L, L) and even on modulation spaces M . Finally the action of pseudodifferential operators with symbols in W (FL, L∞) is also investigated.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Sharp Continuity Results for the Short-time Fourier Transform and for Localization Operators

We completely characterize the boundedness on Wiener amalgam spaces of the short-time Fourier transform (STFT), and on both L and Wiener amalgam spaces of a special class of pseudodifferential operators, called localization operators. Precisely, sufficient conditions for the STFT to be bounded on the Wiener amalgam spaces W (L, L) are given and their sharpness is shown. Localization operators a...

متن کامل

Changes of Variables in Modulation and Wiener Amalgam Spaces

In this paper various properties of global and local changes of variables as well as properties of canonical transforms are investigated on modulation and Wiener amalgam spaces. We establish several relations among localisations of modulation and Wiener amalgam spaces and, as a consequence, we obtain several versions of local and global Beurling–Helson type theorems. We also establish a number ...

متن کامل

Approximation property and nuclearity on mixed-norm Lp, modulation and Wiener amalgam spaces

In this paper, we first prove the metric approximation property for weighted mixed-norm L (p1,...,pn) w spaces. Using Gabor frame representation, this implies that the same property holds in weighted modulation and Wiener amalgam spaces. As a consequence, Grothendieck’s theory becomes applicable, and we give criteria for nuclearity and r-nuclearity for operators acting on these spaces as well a...

متن کامل

Sharpness of Some Properties of Wiener Amalgam and Modulation Spaces

We prove sharp estimates for the dilation operator f(x) 7−→ f(λx), when acting on Wiener amalgam spaces W (L, L). Scaling arguments are also used to prove the sharpness of the known convolution and pointwise relations for modulation spaces M, as well as the optimality of an estimate for the Schrödinger propagator on modulation spaces.

متن کامل

Boundedness of Fourier Integral Operators on Modulation Spaces

It is known that Fourier integral operators arising when solving Schrödinger-type operators are bounded on the modulation spaces Mp,q, for 1 ≤ p = q ≤ ∞, provided their symbols belong to the Sjöstrand class M. However, they generally fail to be bounded on Mp,q for p 6= q. In this paper we study several additional conditions, to be imposed on the phase or on the symbol, which guarantee the bound...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009